Neocuproine hemihydrate
Also known as: 2,9-Dimethyl-1,10-phenanthroline hemihydrate, 2,9-Dimethyl-1,10-phenanthroline 0.5-water, 2,9-Dimethyl-o-phenanthroline hemihydrate, Neocuproine 0.5-water, Neocuproine hemihydrate
Neocuproine hemihydrate (CAS 34302-69-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C28H26N4O and a molecular weight of 434.53200 g/mol. Key properties include a melting point of 161-163ºC, a boiling point of 442.7ºC at 760mmHg and a flash point of 221.5ºC. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H318 — Causes serious eye damage. It is listed by 2 suppliers, 1 of which publish reference prices, from 23.84 to 48.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 34302-69-7
- Jingsj CID
- J-10742-4
- Molecular Formula
- C28H26N4O
- Molecular Weight
- 434.53200 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | 98% 100g | ¥2,384.00 | $3.57 /gBest ¥23.84/g CNY | CN China MOQ 100g | |
In Stock | 98% 25g | ¥722.00 | $4.32 /g ¥28.88/g CNY | CN China MOQ 25g | |
In Stock | 98% 5g | ¥198.00 | $5.93 /g ¥39.60/g CNY | CN China MOQ 5g |
Physicochemical Properties
| Melting Point | 161-163ºC |
|---|---|
| Boiling Point | 442.7ºC at 760mmHg |
| Flash Point | 221.5ºC |
| Exact Mass | 434.21100 |
| PSA | 60.79000 |
| LogP | 6.73530 |
| Appearance | Crystalline Powder | White |
| Additional Property | methanol: 0.1 g/mL, clear |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H315 — Causes skin irritation
- H318 — Causes serious eye damage
- H335 — May cause respiratory irritation
Frequently Asked Questions
What is the CAS number of Neocuproine hemihydrate?
The CAS number of Neocuproine hemihydrate is 34302-69-7.
What are the molecular formula and molecular weight of Neocuproine hemihydrate?
Neocuproine hemihydrate has molecular formula C28H26N4O and molecular weight 434.53200 g/mol.
Which suppliers offer Neocuproine hemihydrate?
2 supplier(s) listed; reference unit price ¥23.84–48.00 /g.
Is Neocuproine hemihydrate hazardous?
Neocuproine hemihydrate has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H318 — Causes serious eye damage.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Neocuproine hemihydrate (CAS 34302-69-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-10742-4 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.